MicroPython Forum

I wrote a driver for the MCP23017, which is similar to the MCP23008, only with two 8-bit ports instead of one.
https://github.com/mcauser/micropython-mcp23017
You may be able to pinch some code/ideas from it.

According to the Nordic Semi website, yes, that Sep 2008 datasheet is the most recent: https://infocenter.nordicsemi.com/pdf/nRF24L01P_PS_v1.0.pdf https://infocenter.nordicsemi.com/topic/struct_nrf24/struct/nrf24L01p.html You can find an example here: https://github.com/micropython/micropython/tree/...

Perhaps it's time for a new thread. If you are using I2C with a char lcd, I am assuming you're talking about driving it with a PCF8574 or a MCP23008/MCP23017 backpack. https://github.com/dhylands/python_lcd has examples using both, and also plain old 4 or 8bit GPIO. The ESP8266 examples are compatib...

One thing to watch out for when comparing FRAM with SPI Flash is that with FRAM, reads are destructive, and with Flash there's almost unlimited reads but write/erase cycles are limited. The limits may be well beyond the lifetime of your app, but worth a quick investigation.

OK so, I have figured out why now. In my case-sensitive.dmg "on the metal" esp-open-sdk, I was bumping the VENDOR_SDK from 2.1.0 to 2.2.1 However... In >= 2.2.0, ets_delay_us() was updated to use a uint32_t! ESP8266_NONOS_SDK-2.1.0 /include/osapi.h void ets_delay_us(uint16_t us); ESP8266_NONOS_SDK-2...

Interesting... When I make using docker , it needs to be void ets_delay_us(uint16_t us); . As it is currently in the repo: https://github.com/micropython/micropython/blob/master/ports/esp8266/etshal.h#L9 cd ports/esp8266 docker run --rm -v $HOME:$HOME -u $UID -w $PWD larsks/esp-open-sdk make When I ...

Have you seen Dave Hyland's version?
His also works with the common "I2C backpack" (PCF8574), Adafruit's backpack (MCP23008), as well as 4 and 8-bit GPIO:
https://github.com/dhylands/python_lcd

ie. to avoid the TypeError, wrap your value in a bytearray: # change io.write_gpio(5) # to io.write_gpio(bytearray([5])) The OLAT register address is 0x0A, but when the port pin is in output mode (pin's IODIR bit =0), you write to the GPIO register instead and it internally updates the OLAT register...

Here's how you draw some random colours. >>> import random >>> for i in range(400): >>> display.write(None, bytearray([random.getrandbits(8)])) You use display.write(command=None, data=your-bytes) to send pixel data to the display. To understand what it is doing, try writing the same 2 bytes, hundre...

Added issue on Github: https://github.com/micropython/micropython/issues/6359